[ret2plt]

It's worse than that. The problem is that being truly rational is hard, unpleasant work that few people want to do. If you read an article that makes your political opponents look bad, you can't just feel smugly superior, you have to take into account that you are predisposed to believe convenient sounding things, so you have to put extra effort into checking the truth of that claim. If you follow the evidence instead of tribal consensus, you will probably end up with some beliefs that your friends and relatives wont like, etc.